Pavement finishing machine



Jan- 15, 1935 A. H. HINKLE ET AL PAVEMENT FNISHNG MACHINE Filed Feb. 29. 1952 2 Sheets-Sheet l .sm uw uw @mi l o 9 k1, wa Nn v6. I N mm. @z Y x mv l kfw Q Q@ uw @Q im i l L Jan. 15, 1935. AA H. HINKLE ET A1. 1,987,681

AVEMENT FINsHlNG MACHINE Filed Feb. 29, 1932 2 Sheets-Sheet 2 Snowdon l1. fil/VME. fi. C. FHsNz/SSf/v.

Patented dianapolis; Ind.,

g vCoinpzm K In the surfe,

sirable to pr peditiously es possi The present Which will facing or refni More particu l vides a machine which w111 Jan. 15, 1935 t rin 'ration `Appliceti()nY Febraiy `29,

17 claimscir-1g of A-roegil de a smooth riding sur ble.

ovi

Shing operat larly the prf ns may bel p r or independ ial being operat r feature of th fece as Contact with the ed upon.

'df Alvi assignors'ff y, Indianapoli sHINf-G NE n C. Rasmussen,

to Insley `Manufae4 s, Ind.

I' be'vi'liereinafter I tion and operavQljiieclear there? Figure 1 is a side elevajfon of themechineof the present construction, f certain details being leuitylf:4

omitted for c y "1i/figure l2 is e, plan Vie beingb'olgenawa;y. l. Figure 3 is) an end View-of the machine; showing details of the tempi Y nedeves- Y vReferringv more particularly to the drawings,

W tof theniaichine, 1a-erts opeating instrumentelities',gsfwu b inefter. i y l UDCH fthe fra clear here# l'ABthe'vrev-s`r carried. the source f vThe sleeve shaft 19`-carries ythe clutch 22 for engagement with the beveled being also wardly along the roadway. The clutch and gear system is of standard construction and the transmission of power to the traction devices will be brought out in more detail hereinafter. The sleeve shaft 19, through a clutch 25, actuates the through-shaft 20 operating in the bearings 27 and 27a, and carrying the crank arms 28 and 28a to which are secured the rods 29 and 29a respectively.

One end of the rod 29 is secured to the frame A at 30, and as the crank arm 28 rotates through a complete circle the rod 29 causes the'upper frame B to oscillate relatively to vthe frame A through the wheels 2 operating on ,theY tracks 1 of the In a similar manner the rod 29a, attached at it outer end at 30a, to the lower frame A, as deconnection with rod 29, provides the upper frame B with oscillating instrumentalities at each end. Clutch 25 will be understood tobe operableIfrom the operators position on the platform" 60', by aA suitable lever, in the usual well understood manner; Y

Referring back to the crankshaft 12, it will be seen that the crank arm- 14 carries the oscillating connecting rod 31, which is connected with the rocker arm 32 for rocking the shaft 33, this shaft each end the oppositely directed rocker arm unit 34, having the oppositely extending arms 35 and 36 positioned to rock vertically, the' arms being'suitably offset as clearly y Aof these arms is illustrated, it being understood that the construction actuated therebywill be duplicated at the end of the shaft 33 which is not shown.

Through thevend of each arm which is formed into a bushing, is passed a screw rod 37 and 38 of suitable length'for the. hereinafter described purpose. Through suitable nuts and washers which will be clearly seen, there are positioned on each rod the upper and` lower buffer springs 39 and 40, the lower springs exerting an additional pressure on the tamping beams at the end of the stroke and allowing for unevenness of roadway.

Each rod 37 and 38 carries also a cross beam, which is conveniently formed of suitably spaced steel channel members 41, each beam engaging an intermediate b1ock-42 and 43, held in place by the tamping beams 44 andv 45 respectively, these tamping beams being of substantial length and being aligned so that alternate beams 44 will be secured to the blocks 43, the remaining beams 45 being secured to the blocks 42, it being understood that the channel members 41 extend across the width of the assembled tamping beams. The blocks and beams are conveniently of wood or any other suitable material of suitable dimensions and are held together by washers and nuts 46 and 47 on the ends of the respective screw rods or otherpractical means, the entire assembly being secured on the rods through the provision of washers 48 and nuts 49. It will therefore be apparent that as the shaft 33 rocks, alternate tamping bars will be raised and lowered to tamp the surface of the pavement while at the same time being reciprocated laterally bythe oscillations of the frame B. The control of this tamping mechanism is effected through suitable actuation of the clutch 6, 8 which controls the actuation of the power transmitting drive 10, as previously described.

It will be seen that the tamping mechanism just described is duplicated at the other end of the machine, the actuating rod 31a. being the counterpart of the actuating rod 31, being mounted on other and in compression when frame A.

the crank 15 for oscillation in a manner entirely similar to that described in connection with the rod 31. The rod 31a is suitably fastened to the rocker arm 32a under actuation of the shaft 33a which in turn carries the rocker arm unit 34a having the vertically moving rocker arms 35a and 36a which are counterparts of the correspondingk arms 35 and 36,previously described.

The rocker arm units 34 and 34a. rock on their vrespective shafts in unison toward and away from each other. VThe connecting arms 3l and 31a being thereby simultaneously in tension when the rocker arms are drawn inwardly toward each the rocker arms are pushed outwardly away from each other. During the time that these rocker arms are pulled inwardly toward each other, the outer cross beams carried by rods 38 are lifted so that half of the tampingl beams are raised. Simultaneously the two inner cross beams carried by rods 37 are depressed and the alternate tamping beams are forced downwardly and perform their tamping action at the end of the stroke.4 These rods3l and 31a pulling the rocker arms simultaneously towards each other or away from each other so as to balance the inertia effect of one against the other, reducing vibration.

` It has been already said that these tamping beams are of considerable length to assure spanning vof all the low spots, and will pound on the high spots until these are brought down to a common, uniform level.

Passing now to the consideration of power transmission from the source of power C to the traction devices herein referred to generally as D and illustrated in the form of rollers, although endless traction belts or wheels may be substituted therefor, if desired, it will be remembered that it has already been described that such power is transmitted from the clutch 22 being brought into engagement with the bevel gears 21 or 23, as desired, to'effect driving of the said gears through the rotation of the sleeve shaft 19 and source of power, the rotation of the bevel gear 2l or 23 being transmitted to the intermediate bevel gear 24, the driving of which Vactuates the sprocket wheel 5l over which passes a sprocketchain 52 to a sprocket wheel 53, thereby driving the shaft 54. Upon the shaft 54 is mounted a sleeve 55a, carrying a sprocket wheel or equivalent power transmitting instrumentality 55, which by means of the sprocket chain or belt 56, correspondingly actuates the sprocket 57 on the rear axle 58 carrying the drive wheels 59, to thereby propel the machine along the roadway. The actuation of sprocket 55 is controlled through the clutch 56a.

The direction of travel is of by the engagement of the gear gear 21 or the gear 23.

The various clutch instrumentalities mentioned herein are of generally standard construction and are operated through various control devices such as levers and the like, and which are not shown, forming no part of this invention, and which are in ready access to an operator riding on the platform 60.

Instrumentalities are also provided for adjusting the depth of the tamping action, such instrumentalities being positioned at the front and and which are indicated in general at 61 and 62, the front axle being indicated at 58a. These instrumentalities adjust the height of the frame A above the level surface through the actuation of the hand screw course determined 24 with either the ing devices'rbeing-ofvarlength many times the trclled independentlyjof-f the traveIof-'the-matogether'with power means` to move the :frame 10 bfenoved and the'upper buier springs around to smpthzltherlaftr Whilypin :suchenga'gement 20 being Operated upon 'gitudinally thereoffand :.'therefore also length- 40 It maybe noted in passing that the COIIHGCUS wise ofthero'ad, Vand;mechanism carried by the rods' S1 and 31a withfthearms 32 and 32a'may frame for inpartin'gi'upanddown and sidewise be 'mddiustable-as Clearly Shown in Figure 1 movementto ihesaidtamping devices, said up and ofthe shafts irrespective of the position of the to the Surfageswith .which .the'tamping devices 45 bei advanced lengthwise of 59 finished longitudinally and transversely. i many *times the-width they y f n Itvwill-beunderstood that a 'machine con# portingthese tampersfro str -u'cted in accordance with the `herein described operating `the'm .1'1p.mL-Wmand Sidewse, to-

FHCDES SfadVafntageOuSly usable not Onlyfor getherfwith mechanismforpropelling-the frame leveling earthlroadways, tarmacadam'roadways, while the tampersare being: operated.

concrete or other surfacing materials of a. plastic 6. A paving machnegcomprisng; incombnaci will the paving materialwhich lies over the high y K spots, thus Iassuring a pavement of equal density ing rod adapt-, throughout.- l v Having thusdescribed our invention, what we Claim, as new and desire t0 Secure by Letters rapid reciprocatory'mouement to theztamping de- Patent ofthe United States, is Y l I 1. A road nishing machine comprising a port- :17.A paving machinaicomprising, in Combina-. able -framezto be: advanced longitudinally of a tion, a. frame,asecohd framecarried by the rst frame and adapted to move transversely thereof, tamping devices carried by the machine, a source of power, and actuating mechanism 'driven from the source of power for actuating the said tamping devices, the said mechanism comprisingfa crank shaft, connecting rodscarried bythe crank shaft, a second shaft,. interconneoted `withfgthe connecting rod and adapted'to be oscillatedthereby as the said crank shaft rotates, and instrumentalities carried by the oscillatableVV shaft for imparting vertical movementr to the tampingodevices .to cause the same to deliver a blow to the road, the last named instrumentalities including rocker arms mounted on the oscillatable shaft for rocking' in la vertical direction; a 'rod passing through each rocker arm, a beam' carried on each rod and extending transversely of the' machine, the said tamping devices being secured-by the rod to' each of the transversely-.extending beams in selected groups, whereby aipaving surface vwill be operated on byeach-groupdoftamping devices alternately for levelingy the said :surface, forf the full longitudinal lengthxof the tamping Vbeams and for full longitudinal length o'f vthe tampers. 8. A paving machineLof the character described, comprising, in combination, a portable frame, a second frame carried by kthe portable frameand movably mounted thereon, a source ofl power in the second frame, driving connections between the first frame and source of power to oscillate the second framerelatively to the.` first frame, tamping and leveling devices 'carriedbythe machine, and driving instrumentalities for selectively actuating the tamping'devices, whereby, the said tamping devices may be actuatedvertically for delivering blows to a road surface4 and for sweeping action.

9. A paving machine of the character described, comprising in combination, a frame, a second frame carried by the portable, frame and movably mounted thereon, a source of ypower on thesecond frame, driving 'connections betweenl the first frame and source of power.` to oscillate the second frame transversely ofthe first frame, a plurality of comparatively long `laterally spaced tamping devices carried by the machine, and instrumentalities for vertically actuating -thetamping devices for causing them to operate upon a paving surface while oscillating the vdevices with the second frame to thereby` level outhigh .spots in apaving surface. 'a .z 10. A paving machine of the character; described, comprising, in combination, a portable frame, tracks mounted on the frame and vextending transversely thereof, a second frame |having wheels running in the said traclrsv on the rfirst frame, a source ofpowercarried by the second frame, ldriving connections .betweenthe first frame and source of power for oscillating the second frame relatively to the first frame, .tamping devices carried by the machine, driving mechanism for vertically actuating the tamping devices to cause them to deliver a levelling force to a paving surface while oscillating the device through the oscillations of the second frame to thereby level out high spots in a paving surface, and instrumentalities for interrupting-the vertical actuation of the devices while continuing oscillation thereof for y laterally Ismoothing the paving. f ll. A paving machine lof the character described, comprising, in combination, a frame, a second frame carried by the first `frame and laterally movable relatively thereto, driving means for producingtransverse oscillatingmovement of thesecond frame, tamping devices carried by the secondV frame adapted to tamp a road, and operating instrumentalities for lifting selected units of the devices while lowering the remainder thereof for completely covering a surface of paving being operated upon for leveling out all high spots in the said paving.

l2. A pavingA machine of the character described',y comprising, incombination, a frame, a second frame carried by the first frame and laterallymovable relatively thereto, driving means forproducing transverseoscillatory movement of the second frame, tamping devices carried by the second frame, and operating instrumentalities for. alternately lifting and lowering selected units of the devices during the said oscillatory movement thereof for completely covering a surface of paving being operated vupon for leveling out all highlspots in the paving, the operating instrumentalitiescomprising an oscillatable shaft, lifting arms mounted on the shaft, demountable, resiliently mounted carrying rods actuated by the lifting arms, a beam extending transversely across the machine and operating with each of the carrying rods, means on the carrying rods for interconnecting selected unts of the aforesaid tamping devices with each of the beams and arms, and actuating instrumentalities connecting the oscillatable shaft with the source of power for oscillating the shaft. `l3. A paving machine of the character described, comprising, in combination, a frame, a second frame carried by the first frame and latdriving means for producing transverse oscillatory movement of the second frame, tamping devices carried by the second frame, and operating instrumentalities for alternately lifting and lowering selected units of the tamping devices during the said oscillatory movement thereof for completely covering a surface of `paving being operated upon for leveling out all high spots in the paving during oscillation of the frame, and means for independently interrupting the tamping and oscillatingactions respectively while continuingthe other of the said actions. I

14. A paving machine of the character described, comprising, in combination, a lower frame adapted to travel along a roadway, an upper frame reciprocably carried on the lower frame, mechanism forreciprocating the upper frame relatively to the lower frame, pavement tamping members carried lby the machine and adaptedto act upon a pavement surface to tamp out high spots thereinfor leveling the surface, instrumentalities for vertically operating the tamping members while oscillating them with the frame, and means for controlling the oscillating action without affecting the action of the tamping instrumentalities.

l5. A paving machine of the character described, comprising, in combination, a lower frame adapted to travel along a roadway, an upper frame reciprocably carried on the lower frame, mechanism for reciprocating the upper frame relatively to the lower frame, pavement tamping members carried by the machine and adapted to act upon a pavement surface to tamp out high spots therein for leveling the surface, instrumentalities for vertically operating the tamping members while oscillating them with the frame, and means for controlling the action oi the tamping instrumentalities without affecting the oscillating action.

16. A paving machine of the character de with the Jcamping beams to vertically actuate the bars and eiect the engagement thereof with the pavement surface.

17. A paving machine of the character described, comprising a, pair of relatively reciprocable frame elements, tamping beams carried thereby and extending beneath the machine for con- ALBERT H. HINKLE. ALVIN C. RASMUSSEN. 

